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CDC421250RGETG4 PDF预览

CDC421250RGETG4

更新时间： 2024-11-05 14:48:27
品牌 Logo 应用领域
德州仪器 - TI 时钟外围集成电路晶体
页数 文件大小 规格书
9页 170K
描述
Fully Integrated Fixed Frequency Low-Jitter Crystal Oscillator Clock Generator 24-VQFN -40 to 85

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CDC421250RGETG4 技术参数

是否无铅：含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：QFN
包装说明：GREEN, PLASTIC, QFN-24针数：24
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.81
Is Samacsys：NJESD-30 代码：S-PQCC-N24
JESD-609代码：e4长度：4 mm
湿度敏感等级：2端子数量：24
最高工作温度：85 °C最低工作温度：-40 °C
最大输出时钟频率：312.5 MHz封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC20,.16SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：3.3 V
主时钟/晶体标称频率：35.42 MHz认证状态：Not Qualified
座面最大高度：1 mm子类别：Clock Generators
最大压摆率：110 mA最大供电电压：3.6 V
最小供电电压：3 V标称供电电压：3.3 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mmuPs/uCs/外围集成电路类型：CLOCK GENERATOR, OTHER
Base Number Matches：1

CDC421250RGETG4 数据手册

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CDC421xxx  
www.ti.com  
SLAS540–APRIL 2007  
FULLY INTEGRATED FIXED FREQUENCY LOW-JITTER, CRYSTAL-OSCILLATOR CLOCK  
GENERATOR  
FEATURES  
•
Output Frequencies: 100 MHz, 106.25 MHz,  
125 MHz, 156.25 MHz, 212.5 MHz, 250 MHz,  
and 312.5 MHz  
•
Single 3.3 V Supply  
•
High-Performance Clock Generator,  
Incorporating Crystal Oscillator Circuitry With  
Integrated Frequency Synthesizer  
•
•
Differential Low-Voltage Positive Emitter  
Coupled Logic (LVPECL) Output  
Fully Integrated Voltage-Controlled Oscillator  
(VCO) Running from 1.75 GHz to 2.35 GHz  
•
•
Low Output Jitter, as Low as 380 fs (rms  
integrated between 10 kHz–20 MHz)  
•
•
•
•
•
Typical Power Consumption 300 mW  
Chip-Enable Control Pin  
Low Phase Noise at 312.5 MHz, Less Than  
–120 dBc/Hz at 10 kHz and –147 dBc/Hz at 10  
MHz Offset From the Carrier  
QFN-24 Package  
•
Supports Crystal Frequencies or LVCMOS  
ESD Protection Exceeds 2 kV HBM  
Industrial Temperature Range –40°C to 85°C  
Input Frequencies at 31.25 MHz, 33.33 MHz,  
and 35.42 MHz  
A
A
A
A
APPLICATIONS  
•
Low-Cost, Low-Jitter Frequency Multiplier  
External Crystal  
Loop Filter  
Crystal  
Oscillator  
Input  
CLK  
VCO  
Feedback  
Divider  
NCLK  
B0216-02  
DESCRIPTION  
CDC421xxx is a high-performance, low-phase-noise clock generator. It has an integrated low-noise, LC-based  
voltage-controlled oscillator (VCO) that operates within the 1.75 GHz–2.35 GHz frequency range. It has an  
integrated crystal oscillator that operates in conjunction with an external AT-cut crystal to produce a stable  
frequency reference for the PLL-based frequency synthesizer. The output frequency (fout) is proportional to the  
frequency of the input crystal (fxtal).  
The device operates in a 3.3 V supply environment and is characterized for operation from –40°C to 85°C.  
CDC421xxx is available in a QFN-24 package.  
A high-level block diagram of the CDC421xxx is shown in Figure 1.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2007, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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